Windows Server 2012 R2 Terminal Service not working.

Hi,

We have configured Terminal Service on Windows Server 2012 R2 andactivated CAL's for Remote desktop which was working fine.

Now we are getting below error and unable to take RDP session.

We have cleared the Grace Period registry key and rebooted the server post that it is workingbut again it is giving 120-days of grace period.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod

Please let me know even though we have activated RD CALs why this grace period option is triggered for every 120-days.

Please suggest how do we get rid of this grace period? Is it a default behavior or is there any fix available forServer 2012 R2?